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MediumCardiologyAcute aortic dissectionca-mccqe1ca-rcpsc-em

A 45-year-old man presents with retrosternal chest pain described as a "tearing" sensation radiating to the back, of sudden onset 1 hour ago. Blood pressure is 190/110 mm Hg in the right arm and 160/90 mm Hg in the left arm. There is a new early diastolic murmur. What is the most likely diagnosis?

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